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WorksheetsAcids and Bases
Total questions: 20
Worksheet time: 4mins
All (Arrhenius) acids contain at least one hydrogen atom.
True
False
All substances that contain hydrogen atoms are acids.
True
False
An acid is a substance that dissociates in water to form (a) (2 words).
Which of the following substances is/are an acid?
H2SO4
NH3
CH3COOH
CH4
Which of the following statements is/are correct about acids?
Acids have a bitter taste and soapy feel.
Acids turn red litmus paper blue.
Acids have pH greater than 7.
Acids are good conductors of electricity in aqueous solution.
Acids react with all metals to form hydrogen gas and a salt.
True
False
Acids react with bases to form a salt and water only. This reaction is known as (a) (1 word).
Acids react with metal carbonates to form a salt and carbon dioxide only.
True
False
Acids only display their properties when they are added to (a) (1 word).
All bases are alkalis.
True
False
All alkalis are bases.
True
False
Which of the following statements is/are correct about alkalis?
Alkalis are a soluble base.
Alkalis dissociate in water to produce hydroxide ions.
Alkalis have no effect on red litmus paper.
Alkalis react with ammonium salts at room temperature to form a salt, water and ammonia gas.
Which beaker, A or B, contains a lower concentration of solution?
(Assuming equal volume of solution in each beaker.)
A
B
The higher the concentration of an acid, the stronger the acid.
True
False
The lower the pH of an acid, the stronger the acid.
True
False
The higher the concentration of an acid, the lower its pH.
True
False
The (a) (1 word) of an acid or alkali refers to the extent it ionises to produce H+ or OH- when dissolved in water.
Which of the following statements is correct about the weak base, ammonia (NH3)?
It dissociates completely in water to produce a high concentration of hydroxide ions.
It dissociates partially in water to produce a low concentration of hydrogen ions.
It dissociates partially in water to produce a high concentration of hydroxide ions.
It dissociates partially in water to produce a low concentration of hydroxide ions.
The pH of a solution is related to its concentration of hydrogen ions (H+).
Which of the following statements is correct?
The higher the concentration of H+ ions in a solution, the higher the pH of the solution.
The lower the concentration of H+ ions in a solution, the lower the pH of the solution.
The higher the concentration of H+ ions in a solution, the lower the pH of the solution.
Which of the following statements is/are correct about a neutral solution?
It has a pH value of 7.
It contains an equal concentration of hydrogen and hydroxide ions.
It gives a green colour with a Universal Indicator.
